Vennar Soft Systems Pvt. Ltd. Supplies Multiple Documents Comparison Software. Vennar Soft Systems Pvt. Ltd. Offers one-stop-solution for the health care information technology needs of the modern medical practice. Multiple Documents Comparison Software has been developed in-house after discovering the critical need by the transcription facility and the clients to compare the documents. Multiple Documents Comparison Software is a web based application that works on any windows based system.